题目内容

当前基因治疗拟采用哪些方法?

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下图为将目的基因转移到大肠杆菌中的过程,简述序号所表示的操作。

现代生物技术发展趋向有哪些?

根据下图简述RNA干扰技术原理。

A.To promote sportsmanship among business owners.B.To encourage people to suppor

A. To promote sportsmanship among business owners.
B. To encourage people to support local sports groups.
C. To raise money for a forthcoming local sports event.
D. To show his familys contribution to the community.

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